When your Drill Batteries fail?

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Forum topic by thudpucker posted 01-26-2011 06:15 AM 1276 views 1 time favorited 7 replies Add to Favorites Watch
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35 posts in 3958 days

01-26-2011 06:15 AM

Topic tags/keywords: drill-driver

I have a collection of Drill batteries that wont take a charge or wont hold a charge very long.
These are all the “SUB C” rechargeable’s.

You can find these on Ebay.
My 14.4 Sears Battery would cost about $45 for batteries, shipping etc.
A new one is nearly $85.

So, have any of you been successful at replacing your own “Sub C” batteries?

I want to hear from everybody who’s had experience with the project.

7 replies so far

View ichbinpete's profile


110 posts in 3229 days

#1 posted 01-26-2011 07:09 AM

Not sure what Sub C is, but I came across this article for “reviving” nicads

Reviving NiCad Batteries

-- It is better to keep your mouth shut and appear stupid than to open it and remove all doubt.

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35 posts in 3958 days

#2 posted 01-26-2011 07:33 AM

Sometimes that works. He’s putting a alternating current across those batteries to destroy the “chemical Memory” of the Nicad’s.

That might work if all the NiCads have the same chemical memory.
In a battery that fails. most of the Cells will be OK, it’s just one or a few that drag the others down.
I’d like to find the ‘bad guys’ and replace them.

View William's profile


9950 posts in 3380 days

#3 posted 01-26-2011 03:06 PM

I tried the reviving method pointed to above. It works sometimes. I have spent a small fortune in the past replacing batteries. The exact problem you have is what has made me swear off cordless tools. I have two drills left. When they die, that’s it. I have mounted a multiplug on my table so I can use mutliple drills (corded). I’m sick of spending more on batteries in the long run than what the original drill cost.


View Florida_Jim's profile


83 posts in 3415 days

#4 posted 01-26-2011 03:35 PM

My local Batteries plus store will rebuild batteries with a higher A/H rating. Costs are about 2/3 of factory batteries. I had them do my 18V dewalt ones. I’m very happy with the results.

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35 posts in 3958 days

#5 posted 01-26-2011 03:41 PM

I had these Sears batteries rebuilt about 2 years ago and they were good for some time.
suddenly….one was a little bit bad then the other. It’s all down hill from then as the one cell drags the others down repeatedly and often.

Our ‘Batteries plus’ went broke and dissapeared.

View grizzman's profile


7836 posts in 3841 days

#6 posted 01-26-2011 04:27 PM

yea my milwaukee that i bought a year ago isnt doing too good…it even has the new ion lithium batteries…after reading williams post…i was thinking how many times do i need a cordless drill…i rarely need a drill where i dont have power…and i to am sick and tired of buy new batteries that almost cost what the new drill was…so im going to start using a good key less chuck drill and be done with this mess….thanks william for making me see the light here…these tool makers sure do rip you off in certain areas…and drills is one of them i think…those batteries dont cost anywhere what they charge…but thats said of a lot of things…but in this case making a change over is doable and i can afford it…

-- GRIZZMAN ...[''''']

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51276 posts in 3673 days

#7 posted 01-26-2011 06:20 PM

They started this with printers & ink. It’s cheaper to buy a new printer, than buy ink for it…

They think just getting you hooked on being cordless you’ll pay the price for batteries…

It’s called the throw away society…

-- Rick

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